Sunday, June 23, 2024
Hawai'i Free Press

Current Articles | Archives

Sunday, May 12, 2024
14 Years Later: Honouliuli WWTP portion of Consent Decree completed
By News Release @ 2:27 AM :: 1084 Views :: Honolulu County, Environment


Honouliuli WWTP portion of Consent Decree completed

News Release from City and County of Honolulu, May 10, 2024

HONOLULU – Mayor Rick Blangiardi today commemorated the city’s completion of the second major milestone within the 2010 Consent Decree – the full secondary treatment upgrade of the Honouliuli Wastewater Treatment Plant (WWTP).

The comprehensive upgrade, totaling $536 million, included enhancements such as the installation of aeration basins, a blower building equipped with turbo blowers, a mixed liquor distribution box, secondary clarifiers, and a secondary process pump station.   Additionally, significant improvements were made to various aspects of the primary treatment process, along with upgrades to civil infrastructure, electrical systems, and SCADA technology.

The Honouliuli facility, initially commissioned in 1978 as a primary treatment facility, and then upgraded to partial secondary treatment in 1996, has now been elevated to full secondary treatment capacity using modern, efficient technology.  The new plant was commissioned in January and has now been turned over to ENV operations staff ahead of the Consent Decree deadline of June 1, 2024.  This represents a significant step forward for the city to meet federal Clean Water Act regulatory requirements.

The consent decree was filed in federal court Dec. 17, 2010.  It halted years of legal action including a Sierra Club lawsuit, the 2007 Beachwalk lawsuit, and resolved litigation over secondary treatment waivers, along with U.S. EPA and Hawai‘i Department of Health (DOH) compliance orders.

In 2010, the negotiated consent decree included three phases and a 25-year implementation schedule, which was unprecedented and the longest timeframe allowed by EPA.  Phase 1 was the upgrade of the sewer collection system; Phase 2 was the secondary upgrade of Honouliuli WWTP; and Phase 3 is the secondary upgrade of Sand Island WWTP.  From 2010 through fiscal year 2020, the city spent approximately $1.3 billion in capital costs on the Phase 1 upgrades to the collection system.  The collection system consists of approximately 2,100 miles of pipes, 72 wastewater pump stations and associated force mains.  The city collects and treats nearly 100 million gallons of wastewater daily.

The secondary upgrade of Sand Island WWTP is being accomplished in two phases, with the first currently 50% complete, to be finished in 2026, and the second to begin in 2029 and completed by the consent decree deadline of Dec. 31, 2035.  The Sand Island WWTP is currently an enhanced primary plant that includes ultraviolet disinfection of effluent prior to discharge through a deep ocean outfall.

While the Honolulu ratepayers bear the burden of funding the consent decree mandated projects, the city employs modern, efficient technologies and uses optimum funding opportunities to save money and resources.  The city continues to work with regulators to ensure residents receive strong value and a clean environment for decades to come.




TEXT "follow HawaiiFreePress" to 40404

Register to Vote


Aloha Pregnancy Care Center


Antonio Gramsci Reading List

A Place for Women in Waipio

Ballotpedia Hawaii

Broken Trust

Build More Hawaiian Homes Working Group

Christian Homeschoolers of Hawaii

Cliff Slater's Second Opinion

DVids Hawaii


Fix Oahu!

Frontline: The Fixers

Genetic Literacy Project

Grassroot Institute

Hawaii Aquarium Fish Report

Hawaii Aviation Preservation Society

Hawaii Catholic TV

Hawaii Christian Coalition

Hawaii Cigar Association

Hawaii ConCon Info

Hawaii Debt Clock

Hawaii Defense Foundation

Hawaii Family Forum

Hawaii Farmers and Ranchers United

Hawaii Farmer's Daughter

Hawaii Federation of Republican Women

Hawaii History Blog

Hawaii Jihadi Trial

Hawaii Legal News

Hawaii Legal Short-Term Rental Alliance

Hawaii Matters

Hawaii Military History

Hawaii's Partnership for Appropriate & Compassionate Care

Hawaii Public Charter School Network

Hawaii Rifle Association

Hawaii Shippers Council

Hawaii Together


Hiram Fong Papers

Homeschool Legal Defense Hawaii

Honolulu Navy League

Honolulu Traffic

House Minority Blog

Imua TMT

Inouye-Kwock, NYT 1992

Inside the Nature Conservancy

Inverse Condemnation

July 4 in Hawaii

Land and Power in Hawaii

Lessons in Firearm Education

Lingle Years

Managed Care Matters -- Hawaii

Missile Defense Advocacy

MIS Veterans Hawaii

NAMI Hawaii

National Parents Org Hawaii

NFIB Hawaii News

NRA-ILA Hawaii


OHA Lies

Opt Out Today

Patients Rights Council Hawaii

Practical Policy Institute of Hawaii

Pritchett Cartoons

Pro-GMO Hawaii

Rental by Owner Awareness Assn

Research Institute for Hawaii USA

Rick Hamada Show

RJ Rummel

School Choice in Hawaii

Talking Tax

Tax Foundation of Hawaii

The Real Hanabusa

Time Out Honolulu

Trustee Akina KWO Columns

West Maui Taxpayers Association

What Natalie Thinks

Whole Life Hawaii